JPH04136107A - Sintered helical gear forming equipment - Google Patents
Sintered helical gear forming equipmentInfo
- Publication number
- JPH04136107A JPH04136107A JP2256056A JP25605690A JPH04136107A JP H04136107 A JPH04136107 A JP H04136107A JP 2256056 A JP2256056 A JP 2256056A JP 25605690 A JP25605690 A JP 25605690A JP H04136107 A JPH04136107 A JP H04136107A
- Authority
- JP
- Japan
- Prior art keywords
- die
- helical gear
- punch
- stage
- gear tooth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000843 powder Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 5
- 230000006835 compression Effects 0.000 abstract description 8
- 238000007906 compression Methods 0.000 abstract description 8
- 238000001125 extrusion Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
- B22F5/085—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs with helical contours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
- Forging (AREA)
- Gears, Cams (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、粉末材料を圧縮して各段の径が異なる焼結
二段斜歯歯車を成形するための装置に関する。なお、こ
の成形装置は外歯歯車用のものと、内歯歯車用のもの＼
２種類がある。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for compressing powder material to form a sintered two-stage helical gear in which each stage has a different diameter. This molding device has two types: one for external gears and one for internal gears.
There are two types.
焼結二段斜歯歯車用成形装置の従来例としては、例えば
、特公昭４Ｂ−２９９００号公報に示されるものがある
。この装置は、ダイ、コア、上パンチ及び同軸心円上で
正円筒形状をもつ分割下パンチによって構成されている
。また、外歯の二段斜向歯車を成形するものには、白下
パンチ及び上パンチの外周、外下パンチの内外周、ダイ
の内周に各々斜歯を設け、一方、内歯の二段斜向歯車を
成形するものには、白下パンチの内外周、外下パンチ及
び上パンチの内周、コアの外周に各々斜歯を設けており
、いずれも、外下パンチと内下パンチの上面高さ位置を
変えて歯車に段部を生しさせている。A conventional example of a forming device for a sintered two-stage helical gear is disclosed in Japanese Patent Publication No. 4B-29900, for example. This device is composed of a die, a core, an upper punch, and a divided lower punch having a regular cylindrical shape on a coaxial center circle. In addition, in the case of forming a two-stage diagonal gear with external teeth, diagonal teeth are provided on the outer periphery of the lower white punch and upper punch, the inner and outer peripheries of the lower outer punch, and the inner periphery of the die. For forming stepped diagonal gears, bevel teeth are provided on the inner and outer peripheries of the lower white punch, the inner peripheries of the lower outer and upper punches, and the outer periphery of the core. The height of the top surface of the gear is changed to create a step on the gear.
上述したように、段部成形のために下パンチを内、外の
２個に分割する従来装置は、金型構造が複雑になる。As described above, the conventional device that divides the lower punch into two parts, the inner and outer parts, for forming the step part has a complicated mold structure.
また、得ようとする歯車の一段目と二段目の段差（径差
）が小さいと外下パンチが肉薄となって破１１シ易くな
り、また、径差次第では下パンチを分割すること自体が
不可能なこともある。Also, if the step (diameter difference) between the first and second stages of the gear you are trying to obtain is small, the lower outer punch will be thinner and more likely to break, and depending on the diameter difference, it may be necessary to separate the lower punch. may not be possible.
さらに、ダイから圧粉体（成形品）をノンクアウトする
ための要素として外下パンチを圧縮完了点から引き下げ
るウェッジ及びフォークを必要とする場合があり、装置
自体の構造も複雑化する。Furthermore, a wedge and a fork for pulling down the outer and lower punches from the point of completion of compression may be required as elements for non-knocking out the green compact (molded product) from the die, and the structure of the device itself becomes complicated.
この発明は、これ等の課題を解決しようとするものであ
る。This invention attempts to solve these problems.
この発明の成形装置は、上記の課題を解決するため、外
歯の斜向歯車成形用のものについてはダイの内側にねじ
れ方向及びリードが共に等しい斜歯を歯車径に対応させ
て二段に設け、さらに、上パンチの外側にダイの内側の
一段目の斜歯とかみ合う斜歯を、下パンチの外側にダイ
の内側の二段目の斜歯とかみ合う斜歯を各々設ける。In order to solve the above-mentioned problems, the forming apparatus of the present invention has two stages of bevel teeth with the same helix direction and lead on the inside of the die for forming externally toothed diagonal gears, corresponding to the gear diameter. Furthermore, the upper punch is provided with oblique teeth that mesh with the first stage of helical teeth inside the die, and the lower punch is provided with diagonal teeth that mesh with the second stage of helical teeth on the inside of the die.
また、内歯の斜向歯車成形用のものについてはコアの外
側にねじれ方向及びリードが共に等しい斜歯を歯車径に
対応させて二段に設け、さらに、上パンチの内側にコア
の外側の一段目の斜歯とかみ合う斜歯を、下パンチの内
側にコアの外側の一段目の斜歯とかみ合う斜歯を各々設
ける。In addition, for gears for forming diagonal gears with internal teeth, bevel teeth with the same helix direction and lead are provided on the outside of the core in two stages corresponding to the gear diameter, and the inside of the upper punch is provided with diagonal teeth on the outside of the core. A diagonal tooth that meshes with the first stage diagonal tooth is provided inside the lower punch, and a diagonal tooth that meshes with the first stage diagonal tooth outside the core is provided on the inside of the lower punch.
なお、前者の装置はダイ、上パンチ、下パンチを、後者
の装置はコア、上パンチ、下パンチをそれぞれ従来と同
様に相対回転可能となしておく。Note that the die, upper punch, and lower punch of the former device are relatively rotatable, and the core, upper punch, and lower punch of the latter device are respectively rotatable relative to each other as in the prior art.
各段の斜歯のねしれ方向とリードを等しくしておくと、
歯車の一段目と二段目を互いにかみ合う斜歯に無理な力
をかけずに同時に圧縮することができる。また、各段の
成形用の斜歯を上述したように共にダイ或いはコアに設
けてもコアの抜き取り、下パンチによる成形品のダイか
らの押出しには支障が出す、従って、上記の問題の発生
原因となる下パンチの分割が不要になり、成形品ノック
アウト用のウェッジ、フォークも省くことができる。If the helix direction and lead of each stage of bevel teeth are made equal,
The first and second stages of the gear can be compressed simultaneously without applying excessive force to the bevel teeth that mesh with each other. Furthermore, even if the bevel teeth for forming each stage are provided on the die or the core as described above, it will be difficult to extract the core and extrude the molded product from the die using the lower punch. Therefore, the above problem will occur. It is no longer necessary to split the lower punch, which causes the problem, and the wedge and fork for knocking out the molded product can also be omitted.
（実施例） 第１図及び第２図にこの発明の実施例を示す。(Example) An embodiment of the present invention is shown in FIGS. 1 and 2.
第１図の装置は第３図に示す外歯の二段斜歯歯車を、一
方、第２閏の装置は第４閏に示す内歯の二段斜向歯車を
各々成形するものであって、第１図、第２図とも中心よ
り左側が給粉状態を、右側が圧縮完了状態を示している
。The device shown in FIG. 1 forms the two-stage helical gear with external teeth shown in FIG. In both FIGS. 1 and 2, the left side of the center shows the powder feeding state, and the right side shows the compressed state.
第１図の装置は、ダイ１をベアリング１０を用いてダイ
プレート６に回転可能に取付けである。In the apparatus shown in FIG. 1, a die 1 is rotatably mounted on a die plate 6 using a bearing 10.
また、この装置のコアロッド２はヨークプレート８に固
定され、上パンチ３はベアリング９を介して上パンチプ
レート５に回転可能に支持されている。さらに、同軸上
で上パンチに対向させた下パンチ４↓よ、位置不動のベ
ースプレート７に固定されている。Further, the core rod 2 of this device is fixed to a yoke plate 8, and the upper punch 3 is rotatably supported by the upper punch plate 5 via a bearing 9. Further, a lower punch 4↓, which is coaxially opposed to the upper punch, is fixed to a base plate 7 whose position is immovable.
上バンチ３は上パンチプレート５に連結するプレス機の
上ラム（図示せず）によって駆動される。The upper bunch 3 is driven by an upper ram (not shown) of the press connected to the upper punch plate 5.
ヨークプレート８もプレス機の下ラム（これも図示せず
）に連結して下ラムで駆動するようにしである。ダイプ
レート６は、ベースプレート７に摺動可能に通した連結
ロッド１１を介してヨークプレート８に連結してあり、
ヨークプレートと一体となって行動する
この第１図の成形装置には、ダイ１の内周に、ねじれ方
向とリードが共に等しい斜歯を歯車の各段の径に対応さ
せて二段に設けである。また、上パンチ３の外周にダイ
内周の上段の斜歯にかみ合う斜歯を、下パンチ４の外周
にグイ内周の下段の斜歯にかみ合う斜歯をそれぞれ設け
である。The yoke plate 8 is also connected to a lower ram (also not shown) of the press so that it is driven by the lower ram. The die plate 6 is connected to the yoke plate 8 via a connecting rod 11 slidably passed through the base plate 7.
The forming device shown in FIG. 1, which operates in unison with the yoke plate, has two stages of bevel teeth on the inner periphery of the die 1 that have the same helix direction and lead, corresponding to the diameter of each stage of the gear. It is. Further, the outer circumference of the upper punch 3 is provided with oblique teeth that engage with the upper oblique teeth on the inner circumference of the die, and the outer circumference of the lower punch 4 is provided with oblique teeth that engage with the lower oblique teeth on the inner circumference of the gouer.
このように構成した第１閏の装置は、ダイ、下パンチ、
コアロッドの３者間に作られるキャビティ内に粉末材料
Ａを充填後、上パンチ３を下降させて圧縮を開始する。The first leap device configured in this way includes a die, a lower punch,
After filling the powder material A into the cavity formed between the three parts of the core rod, the upper punch 3 is lowered to start compression.
このとき、下パンチ４が定位置固定であり、かつ下パン
チ外周の斜歯とグイ内周の下段の斜歯が互いにかみ合っ
ているので、ダイ１は斜歯のリードにより回転しながら
降下していく。また、上パンチ３も外周の斜向がダイ内
周の上段の斜向とかみ合っているのでダイとの間に相対
回転を生じ、グイと同一方向にグイよりも早く回転しな
がらダイ１の中に進入していく。At this time, the lower punch 4 is fixed at a fixed position, and the diagonal teeth on the outer periphery of the lower punch and the lower diagonal teeth on the inner periphery of the goo are engaged with each other, so the die 1 is rotated and lowered by the lead of the diagonal teeth. go. In addition, since the upper punch 3 also engages with the upper diagonal of the inner circumference of the die, a relative rotation occurs between the upper punch 3 and the die. We will enter into
なお、圧縮が完了するとヨークプレート８が降下してコ
アロッド２が引き抜かれ、同時にダイ１が回転しつ＼降
下して成形品の押出しが行われる。When the compression is completed, the yoke plate 8 is lowered and the core rod 2 is pulled out, and at the same time the die 1 is rotated and lowered to extrude the molded product.
第２図の装置は、ねじれ方向、リードの等しい斜向をコ
アロッド２の外周に二段に設け、そのロンド外周の上段
の斜向に上パンチ３の内周に設けた斜向を、下段の斜向
に下パンチ４の外周に設けた斜向を各々かみ合わせるよ
うにしたことと、コアロッド２を回転可能に支持し、圧
縮時及び型抜き時にそのコアロッドを回転させるように
したことが第１図の装置と異なる。その他の構成、作用
、効果は第１図の装置とは一同しであるので説明を省く
。In the device shown in FIG. 2, two stages of diagonals with equal twist directions and leads are provided on the outer circumference of the core rod 2, and the diagonals provided on the inner periphery of the upper punch 3 are arranged on the upper stage of the outer circumference of the core rod 2, and the diagonals provided on the inner periphery of the upper punch 3 are arranged on the lower stage. The first feature is that the diagonal holes provided on the outer periphery of the lower punch 4 are engaged with each other, and the core rod 2 is rotatably supported so that the core rod is rotated during compression and die cutting. The device is different from the one shown in the figure. The other configurations, functions, and effects are the same as those of the device shown in FIG. 1, so explanations thereof will be omitted.
以上述べたように、この発明の成形装置は、下パンチを
分割せずに、また、ウェッジ、フォーク等のノックアウ
ト用要素を加えずに２段斜歯歯車を成形し、かつ型抜き
することができるので、金型及び装置の簡素化が計れる
。As described above, the molding device of the present invention is capable of molding and punching out a two-stage helical gear without dividing the lower punch or adding knockout elements such as wedges or forks. As a result, molds and equipment can be simplified.
また、下パンチを分割しないので、下パンチの破損事故
等が減少し、かつ、従来装置では望めなかった各段の径
差が非常に小さい二段斜向歯車も成形可能となる、
なお、この発明の装置は、各段の歯のねしれ方向とリー
ドが等しい斜歯歯車のみに有効であるが、このような歯
車の需要は比較的多く、また、その中には各段の径差が
小さなものも少なからず含まれているので、成形可能な
品種が制限されるにしても、この発明の価値は非常に大
であると云える。In addition, since the lower punch is not divided, accidents such as damage to the lower punch are reduced, and it is also possible to form two-stage diagonal gears with extremely small diameter differences between each stage, which was not possible with conventional equipment. Although the device of the invention is effective only for helical gears in which the helix direction and lead of the teeth of each stage are equal, there is a relatively large demand for such gears, and some of them have diameter differences between each stage. Since a considerable number of small objects are included, even if the types that can be molded are limited, it can be said that the value of this invention is extremely large.
第１図は、この発明の成形装置の一例を給粉時、圧縮時
を半々にして示す断面図、第２図は他の実施例を第１回
と同様にして示す断面図、第３図（イ）、（ロ）は第１
図の装置で成形する外歯二段斜向歯車の平面図と側面図
、第４図（イ）、（ロ）は第２図の装置で成形する内歯
二段斜歯歯車の平面図と側面図であ１・・・・・・グイ
、 ２・・・・・・コアロッド、３・・・・
・・上パンチ、 ４・・・・・・下パンチ、５・
・・・・・上パンチプレート、
６・・・・・・ダイプレート、 ７・・・・・・ヘー
スプレート、８・・・・・・ヨークプレート、Ｓｌ １
０・・・・・・ヘアリング、１１・・・・・・連結ロン
ド。FIG. 1 is a cross-sectional view showing an example of the molding apparatus of the present invention, with the powder feeding time and the compression time being divided in half, FIG. 2 is a cross-sectional view showing another embodiment in the same manner as the first time, and FIG. 3 (a) and (b) are the first
A plan view and a side view of a two-stage externally toothed helical gear formed by the device shown in the figure, and a plan view and a side view of a two-stage internally toothed helical gear formed by the device shown in FIG. In the side view, 1...Gui, 2...Core rod, 3...
...Upper punch, 4...Lower punch, 5.
... Upper punch plate, 6 ... Die plate, 7 ... Heath plate, 8 ... Yoke plate, Sl 1
0...hair ring, 11...connected rondo.
Claims (2)
者とコアとを用いて粉末材料を圧縮し、各段の外径が異
なる焼結二段斜歯歯車を成形する装置であって、ダイの
内側にねじれ方向及びリードが共に等しい斜歯を歯車径
に対応させて二段に設け、さらに、上パンチの外側にダ
イの内側の一段目の斜歯とかみ合う斜歯を、下パンチの
外側にダイの内側の二段目の斜歯とかみ合う斜歯を各々
設けたことを特徴とする焼結斜歯歯車の成形装置。(1) Die, upper punch, and lower punch that can be rotated relative to each other
This device compresses powder material using a die and a core to form a sintered two-stage helical gear in which each stage has a different outer diameter. They are provided in two stages corresponding to the diameter, and furthermore, on the outside of the upper punch there are bevel teeth that engage with the first stage of bevel teeth inside the die, and on the outside of the lower punch there are bevel teeth that mesh with the second stage of bevel teeth on the inside of the die. A forming device for a sintered helical gear, characterized in that each tooth is provided.
者とダイとを用いて粉末材料を圧縮し、各段の内径が異
なる焼結二段斜歯歯車を成形する装置であって、コアの
外側にねじれ方向及びリードが共に等しい斜歯を歯車径
に対応させて二段に設け、さらに、上パンチの内側にコ
アの外側の一段目の斜歯とかみ合う斜歯を、下パンチの
内側にコアの外側の二段目の斜歯とかみ合う斜歯を各々
設けたことを特徴とする焼結斜歯歯車の成形装置。(2) 3 cores capable of relative rotation, upper punch, and lower punch
This is a device for compressing powder material using a screwdriver and a die to form a sintered two-stage helical gear in which each stage has a different inner diameter. Furthermore, the upper punch has bevel teeth that mesh with the first stage of bevel teeth on the outside of the core, and the inside of the lower punch has a bevel tooth that meshes with the second stage of bevel teeth on the outside of the core. A forming device for a sintered helical gear, characterized in that it is provided with:
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2256056A JPH04136107A (en) | 1990-09-25 | 1990-09-25 | Sintered helical gear forming equipment |
| AU84593/91A AU640525B2 (en) | 1990-09-25 | 1991-09-19 | Device for forming two-tier helical gears |
| EP91116156A EP0477824B1 (en) | 1990-09-25 | 1991-09-23 | Devices for forming two-tier helical gears |
| ES91116156T ES2057700T3 (en) | 1990-09-25 | 1991-09-23 | DEVICE FOR FORMING TWO-FLOOR HELICAL GEARS. |
| DE69103109T DE69103109T2 (en) | 1990-09-25 | 1991-09-23 | Devices for the production of helical gears. |
| US07/765,034 US5259744A (en) | 1990-09-25 | 1991-09-24 | Devices for forming two-tier helical gears |
| KR1019910016673A KR960005887B1 (en) | 1990-09-25 | 1991-09-25 | Sintering Helical Gear Forming Equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2256056A JPH04136107A (en) | 1990-09-25 | 1990-09-25 | Sintered helical gear forming equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04136107A true JPH04136107A (en) | 1992-05-11 |
Family
ID=17287292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2256056A Pending JPH04136107A (en) | 1990-09-25 | 1990-09-25 | Sintered helical gear forming equipment |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5259744A (en) |
| EP (1) | EP0477824B1 (en) |
| JP (1) | JPH04136107A (en) |
| KR (1) | KR960005887B1 (en) |
| AU (1) | AU640525B2 (en) |
| DE (1) | DE69103109T2 (en) |
| ES (1) | ES2057700T3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289717A (en) * | 2021-11-19 | 2022-04-08 | 蓝山县金山川粉末冶金有限公司 | Gear preparation mould with annular groove |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2938676B2 (en) * | 1992-06-05 | 1999-08-23 | 日立粉末冶金株式会社 | Extrusion molding method and molding apparatus for powder material |
| CA2154556C (en) * | 1993-11-24 | 2006-02-21 | Gerd Hinzmann | Undercut split die |
| DE69325924T2 (en) * | 1993-11-24 | 2000-02-17 | Stackpole Ltd., Mississauga | OFFSET MULTI-PIECE PRESS |
| DE4428842C1 (en) * | 1994-08-02 | 1996-01-18 | Mannesmann Ag | Device for the production of compacts |
| TW287975B (en) * | 1995-11-16 | 1996-10-11 | Honda Motor Co Ltd | Method of and apparatus for manufacturing pressed powder body |
| US6165400A (en) * | 1996-05-09 | 2000-12-26 | Stackpole Limited | Compacted-powder opposed twin-helical gears and method |
| US6440357B1 (en) | 1996-05-09 | 2002-08-27 | Stackpole Limited | Compacted-powder opposed twin-helical gears and method |
| AT406240B (en) * | 1996-06-20 | 2000-03-27 | Miba Sintermetall Ag | MOLDING TOOL FOR PRESSING A MOLDED BODY FROM A SINTER POWDER |
| GB2360825B (en) * | 2000-03-30 | 2004-11-17 | Formflo Ltd | Gear wheels roll formed from powder metal blanks |
| JP3687492B2 (en) * | 2000-06-21 | 2005-08-24 | 株式会社村田製作所 | Press molding method of dielectric block |
| DE10222132B4 (en) * | 2002-05-17 | 2006-04-20 | SCHWäBISCHE HüTTENWERKE GMBH | Multiple helical, one-piece pressed gear and method and apparatus for its production |
| US6887064B2 (en) * | 2002-06-18 | 2005-05-03 | Sung Kuk Soh | Method and apparatus for producing non-planar formed parts using compaction molding compounds, and parts formed using same |
| US7076875B2 (en) * | 2002-09-12 | 2006-07-18 | Deere & Company | Method of manufacturing compound helical planet gears having different leads |
| CN100462165C (en) * | 2006-08-08 | 2009-02-18 | 海门市常乐粉末冶金厂 | Manufacturing method and mold of powder metallurgy internal spiral ratchet |
| GB0702196D0 (en) * | 2007-02-06 | 2007-03-14 | 3M Innovative Properties Co | Device for producing a dental workpiece |
| GB0719824D0 (en) * | 2007-10-11 | 2007-11-21 | 3M Innovative Properties Co | Dental blank and method of making a dental ceramic blank |
| EP2853322A1 (en) * | 2013-09-30 | 2015-04-01 | Seco Tools AB | Press for making a tool green body having a helical flute, method for making a tool green body having a helical flute, and tool green body having a helical flute |
| DE102017001211A1 (en) | 2017-02-09 | 2018-08-09 | Audi Ag | Method and device for producing a helical metal profile and method for producing helical gears |
| EP4272888A1 (en) * | 2022-05-05 | 2023-11-08 | Volvo Car Corporation | Gear component |
| KR102741854B1 (en) * | 2024-04-25 | 2024-12-12 | 주식회사 형제정밀 | Injection mold for manufacturing two-stage gears |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL253507A (en) * | 1960-07-28 | |||
| BE759661A (en) * | 1969-12-01 | 1971-04-30 | Hitachi Powdered Metals Cy Ltd | POWDER COMPRESSION DEVICE TO FORM A COMPRESSED HELICOIDAL GEAR |
| GB1385992A (en) * | 1971-10-18 | 1975-03-05 | Gleason Works | Method for producing high strength finished forms from ferrous metal powders |
| GB1419770A (en) * | 1972-06-29 | 1975-12-31 | Metal Compacting Tools Ltd | Press tools |
| IT976216B (en) * | 1972-12-29 | 1974-08-20 | Olivetti & Co Spa | DEVICE FOR FORMING HELICAL PIECES BY COMPACTION OF POWDER MATERIALS |
| US3891367A (en) * | 1973-05-08 | 1975-06-24 | Olivetti & Co Spa | Apparatus for moulding helical gears by compression of powders |
| JPS5612398A (en) * | 1979-07-11 | 1981-02-06 | Kumiai Chem Ind Co Ltd | Organic phosphate derivative, its preparation, and germicide, insecticide and acaricide containing it |
| FR2490515B1 (en) * | 1980-09-22 | 1982-09-03 | Alliages Frittes Sa | |
| JP2557443B2 (en) * | 1988-01-30 | 1996-11-27 | 住友電気工業株式会社 | Powder molding equipment for parts with beveled teeth |
-
1990
- 1990-09-25 JP JP2256056A patent/JPH04136107A/en active Pending
-
1991
- 1991-09-19 AU AU84593/91A patent/AU640525B2/en not_active Ceased
- 1991-09-23 ES ES91116156T patent/ES2057700T3/en not_active Expired - Lifetime
- 1991-09-23 EP EP91116156A patent/EP0477824B1/en not_active Expired - Lifetime
- 1991-09-23 DE DE69103109T patent/DE69103109T2/en not_active Expired - Fee Related
- 1991-09-24 US US07/765,034 patent/US5259744A/en not_active Expired - Fee Related
- 1991-09-25 KR KR1019910016673A patent/KR960005887B1/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289717A (en) * | 2021-11-19 | 2022-04-08 | 蓝山县金山川粉末冶金有限公司 | Gear preparation mould with annular groove |
| CN114289717B (en) * | 2021-11-19 | 2024-05-10 | 蓝山县金山川粉末冶金有限公司 | Gear preparation mould with annular groove |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69103109T2 (en) | 1995-03-09 |
| US5259744A (en) | 1993-11-09 |
| AU640525B2 (en) | 1993-08-26 |
| KR960005887B1 (en) | 1996-05-03 |
| DE69103109D1 (en) | 1994-09-01 |
| AU8459391A (en) | 1992-04-02 |
| EP0477824A3 (en) | 1992-12-16 |
| KR920006062A (en) | 1992-04-27 |
| ES2057700T3 (en) | 1994-10-16 |
| EP0477824A2 (en) | 1992-04-01 |
| EP0477824B1 (en) | 1994-07-27 |
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